Concerns about insider trading in the prediction market are rising, leading Goldman Sachs, JPMorgan Chase, and others to tighten employee trading rules

According to CNBC, as concerns about insider trading arise from prediction markets, Goldman Sachs has prohibited employees from trading contracts related to the bank's own events, elections, financial markets, macroeconomic data, and geopolitical issues. Financial institutions such as Morgan Stanley, JPMorgan Chase, and Bank of America are formulating or updating relevant policies, with Bank of America explicitly prohibiting certain behaviors related to prediction market trading for its employees.

Previously, the CFTC and the Department of Justice charged a Google employee with profiting approximately $1.2 million by trading "annual search" related contracts on Polymarket using non-public information. Legal experts stated that the CFTC is "still a blank slate" in terms of insider trading enforcement, but the variety of contract types on the platform makes comprehensive regulation difficult. Kalshi and Polymarket have respectively launched employment verification tools and collaborated with Chainalysis and Palantir to monitor suspicious activities. Lawyers recommend that companies update their insider trading policies to cover event contracts, establish monitoring agreements, and even prohibit access to prediction markets on company devices.